Laptop screen keeps switching off

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Laptop screen keeps switching off, so I have plugged in a monitor which has been working fine. I tried to start the laptop screen which I did yesterday but somehow I think I have made the laptop screen the primary screen but it’s all black.

I can bring the curser back onto the monitor no problem but the monitor only has the windows picture on. Nothing else at all to click on to. I have tried F8 but it just opens up on the blank, black screen.


If its Windows 7, hold down the windows logo key and press P, each time you do this it will scroll through the display options.

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